The term "blood diamonds" is a nickname for a. rubies and other red gemstones b. diamonds used to fund civil war c. diamonds used to fund the construction of hospitals d. gemstones used to buy freedom from slavery

B. diamonds used to fund civil war

Explanation:

The term "blood diamonds" is another name used for "conflict diamonds". These diamonds are stones produced in areas controlled by rebel forces. These rebels sell these diamonds and the money they make by doing this is used to purchase arms or to take military actions. These diamonds usually come from Africa, since there are many countries there with active rebel forces. So, in other words, the money made by selling these diamonds is used to continue the military actions by rebel forces and therefore to fund civil war.